title: Indicated cognitive behavioral group depression prevention compared to bibliotherapy and brochure control: acute effects of an effectiveness trial with adolescents.
abstract: OBJECTIVE
  We tested whether a brief cognitive behavioral (CB) group and bibliotherapy prevention reduce major depressive disorder (MDD) onset, depressive symptoms, and secondary outcomes relative to brochure controls in adolescents with self-reported depressive symptoms when school personnel recruit participants and deliver the intervention.
  
  
  METHODS
  Three hundred seventy-eight adolescents (M age = 15.5 years, SD = 1.2; 68% female, 72% White) with elevated self-assessed depressive symptoms were randomized to a 6-session CB group, minimal contact CB bibliotherapy, or educational brochure control. Participants were assessed at pretest, posttest, and 6-month follow-up.
  
  
  RESULTS
  CB group participants showed a significantly lower risk for major depressive disorder onset (0.8%), compared to both CB bibliotherapy (6.3%) and brochure control (6.5%; hazard ratio = 8.1 and 8.3, respectively). Planned contrasts indicated that CB group resulted in lower depressive symptom severity than brochure control at posttest (p = .03, d = 0.29) but not 6-month follow-up; differences between CB group and bibliotherapy were nonsignificant at posttest and 6-month follow-up. Condition effects were nonsignificant for social adjustment and substance use.
  
  
  CONCLUSIONS
  The finding that a brief CB group intervention delivered by real-world providers significantly reduced MDD onset relative to both brochure control and bibliotherapy is very encouraging, although effects on continuous outcome measures were small or nonsignificant and approximately half the magnitude of those found in efficacy research, potentially because the present sample reported lower initial depression.
authors.affiliation: Oregon Research Institute.
authors.forename: Paul
authors.initials: P
authors.lastname: Rohde
authors.affiliation: Oregon Research Institute.
authors.forename: Eric
authors.initials: E
authors.lastname: Stice
authors.affiliation: Oregon Research Institute.
authors.forename: Heather
authors.initials: H
authors.lastname: Shaw
authors.affiliation: Department of Psychology.
authors.forename: Frédéric N
authors.initials: FN
authors.lastname: Brière
mesh_terms: D000293:Adolescent; D001638:Bibliotherapy / Q000379:methods*; D015928:Cognitive Behavioral Therapy / Q000379:methods*; D003866:Depressive Disorder / Q000517:prevention & control* / Q000523:psychology / Q000628:therapy; D005260:Female; D006801:Humans; D008297:Male; D010174:Pamphlets; D011615:Psychotherapy, Group / Q000379:methods*; D012307:Risk Factors; D012917:Social Adjustment; D012944:Social Support; D016896:Treatment Outcome; D055815:Young Adult